The T-shirt that I have seen that slogan on "Black by popular demand" is a black T with white text. Perhaps a blue next for us to match the colour of Apple. The letters could even be in the old-school Apple logo colours.

Apple, and the Apple Logo, is the seventh most recognized brand name in the world. Seventh. Like just behind "marlboro" and "Pepsi" & "Coke" (Thats three right there.) There is no way Apple is going to let go of control. Look at the fight over "iPhone".